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首页> 外文期刊>Fuel >Performance assessment of NiMo/gamma-Al2O3 catalysts for upgrading KEC-AR: An assessment of selected apparent kinetic parameters of selected hydrotreating reactions
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Performance assessment of NiMo/gamma-Al2O3 catalysts for upgrading KEC-AR: An assessment of selected apparent kinetic parameters of selected hydrotreating reactions

机译：NiMo /γ-Al2O3催化剂用于升级KEC-AR的性能评估：选定加氢处理反应的选定表观动力学参数的评估

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In this study, the performance of three commercially available ARDS catalysts was investigated for the purpose of upgrading KEC-AR. The three catalysts chosen were based on NiMo/c-Al2O3 with varying NiMo loadings, porosities, and surface areas. KEC-AR was the 360 degrees C+ atmospheric derivative of Kuwait Export Crude (KEC). Testing was carried out using a fixed-bed reactor under operating conditions similar to the operating conditions applied on the actual ARDS units operated by Kuwait National Petroleum Company (KNPC). Catalyst performance testing was conducted at three reaction temperatures: 370, 390, and 410 degrees C. The results showed that vanadium removal from KEC-AR is highly dependent on the catalyst porosity; the wider and larger the catalyst pores were, the higher the vanadium conversion was. Additionally, it was observed that vanadium removal correlates proportionally with asphaltene conversion. Unlike vanadium removal, nickel removal showed a slight dependence on the NiMo loading. However, it did not show a clear dependence on asphaltene removal even though 70% of the nickel in KEC-AR is housed in the asphaltene fraction. Sulfur removal from KEC-AR was found to be dependent on two factors: the catalyst porosity and the catalytic sites. This was evident because it was observed that the catalyst that had intermediate properties in terms of porosity and NiMo loading was the most active among the others tested in this study. Asphaltene removal from KEC-AR showed clear dependence on the catalyst porosity; it was found that the catalyst with wider and larger pores was the most active among the others even though, quantitatively, the catalyst had the least NiMo loading and the smallest surface area when compared to the other two catalysts in this study. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在这项研究中，为了升级KEC-AR，研究了三种市售ARDS催化剂的性能。选择的三种催化剂是基于NiMo / c-Al2O3，具有不同的NiMo含量，孔隙率和表面积。 KEC-AR是科威特出口原油（KEC）的360摄氏度+大气衍生物。使用固定床反应器在类似于科威特国家石油公司（KNPC）实际ARDS装置上使用的运行条件的条件下进行测试。在三个反应温度：370、390和410℃下进行了催化剂性能测试。结果表明，从KEC-AR中脱除钒高度依赖于催化剂的孔隙率。催化剂孔越宽和越大，钒的转化率就越高。另外，观察到钒的去除与沥青质转化成比例。与除钒不同，除镍显示出对NiMo含量的轻微依赖。但是，即使在KEC-AR中70％的镍都储存在沥青质馏分中，也没有显示出对沥青质去除的明显依赖性。发现从KEC-AR中脱硫取决于两个因素：催化剂孔隙率和催化部位。这是很明显的，因为据观察，在孔隙率和NiMo负载方面具有中间性质的催化剂是本研究中测试的其他催化剂中最活跃的。从KEC-AR中去除沥青质显示出对催化剂孔隙率的明显依赖性；结果发现，与本研究中的其他两种催化剂相比，从定量上讲，具有更大孔隙和更大孔隙的催化剂是最具活性的，尽管从数量上讲，该催化剂具有最小的NiMo负载量和最小的表面积。 （C）2015 Elsevier Ltd.保留所有权利。

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